Table 4. Precision of cyanocobalamin analysis

Component	Sample	Repeatability1)			Reproducibility2)
		Mean±SD3)	CV4) (%)	HorRat (r)5)	Mean±SD	CV (%)	HorRat (R)6)
Cyanocobalamin (μg/100 g)	Commercial infant formula	5.68±0.30	5.35	0.27	6.56±0.23	3.51	0.18

Repeatability refers to the results of independent 5 determination in triplicates obtained by analyzing a infant formula sample five times on the same day.
Reproducibility refers to the results of independent 5 determinations in triplicates obtained by analyzing a infant formula sample five times on different days (once a day).
SD, standard deviation.
CV, coefficient of variation.
HorRat ratio for intra day repeatability.
HorRat ratio for inter day reproducibility.